The table lists the physical properties of three substances. U: melting point $420\,^{\circ}\text{C}$, boiling point $907\,^{\circ}\text{C}$, conductivity (solid): good, conductivity (liquid): good, conductivity (aqueous): insoluble. V: melting point $993\,^{\circ}\text{C}$, boiling point $1695\,^{\circ}\text{C}$, conductivity (solid): poor, conductivity (liquid): good, conductivity (aqueous): good. W: melting point $-70\,^{\circ}\text{C}$, boiling point $58\,^{\circ}\text{C}$, conductivity (solid): poor, conductivity (liquid): poor, conductivity (aqueous): hydrolyses, resulting solution conducts well. What might U, V and W be?
- AU = Na, V = KCl, W = SiCl₄
- BU = Na, V = NaF, W = $\text{C}_2\text{H}_5\text{Br}$
- CU = Zn, V = KCl, W = HCl
- DU = Zn, V = NaF, W = SiCl₄